The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A reliable wireless communication method for next-generation decentralized control of power distribution systems is described; the method is based on TDMA combined with broadcast and data redundancy. The communication reliability (packet non-arriving rate [PNR] and latency) of the method was evaluated for a case study in a simulation under a realistic condition using Japanese next-generation power...
This paper presents cooperative routing scheme to improve data reliability. The proposed protocol achieves its objectives, however, at the cost of surplus energy consumption. Thus sink mobility is introduced to minimize the energy consumption cost of nodes as it directly collects data from the network nodes at minimized communication distance.
This paper designs an underlay control channel for noncontiguous-OFDM-based cognitive networks. Noncontiguous OFDM (NC-OFDM) provides a fast and flexible manner of accessing disjoint parts of the spectrum and is ideally suited for dynamic spectrum access. While similar to OFDM, NC-OFDM explicitly restricts transmission to only certain subcarriers that are free of incumbent transmissions. In particular,...
In this paper, the fundamental limits of decentralized simultaneous information and energy transmission in the two-user Gaussian multiple access channel (G-MAC) are fully characterized for the case in which a minimum energy transmission rate b is required for successful decoding. All the achievable and stable information-energy transmission rate tuples (R1, R2, B) are identified. R1 and R2 are in...
Face to the growing demand of multimedia services, over wireless local area networks, ensuring an efficient and reliable multicast transmission becomes a necessity. Thus, the upcoming 802.11aa amendment has proposed the group addressed transmission service (GATS) to overcome problems caused by the absence of feedback in multicast transmission. We focus in this paper on the group cast with retries...
As a great step toward the 5G network that will comprise the set of revolutionary technologies designed to cope with the vast increase in demand for faster connectivity, speedier downloads and more reliable communication, Multipath Transmission Control Protocol (MPTCP) promises higher bandwidth and higher resilience against network path failures by allowing multiple paths between two devices to be...
The article deals with the basic causes of the electrical loads maldistribution in three-phase networks, supply of single-phase consumers. It determines the possible consequences in the form of demand dis-function in phases increasing the risk of damage, outages, failures, intermittent operation for power consumers reducing the reliability of single-phase consumers and an increase in wastes. It also...
To improve the power-spectral efficiency trade-off of intensity-modulated direct-detection (IM/DD) optical transmissions, enhanced unipolar orthogonal frequency-division multiplexing (eU-OFDM) was recently introduced. Uncoded eU-OFDM systems have been presented in literature but coding techniques to further improve the reliability of transmissions over such systems have not yet been explored. Applying...
The number of automotive Advanced Driver Assistance Systems with safety-related functions is increasing rapidly. Even autonomous vehicles are expected to be on the road in the near future. Electrical systems are having to meet increasingly high safety requirements, which also apply for the network level. In this paper we show how the Ethernet-based in-car-communication process can be modeled with...
Modern cars integrate a huge number of functionalities with high bandwidth, real-time, and reliability requirements. Ethernet offers the possibility to satisfy these bandwidth requirements and enables the usage of temporal redundancy mechanisms to increase the reliability of the communication network. In this paper, we present a lightweight formal analysis approach for the determination of the transmission...
Strict Priority Queuing (SPQ) is a widely used queuing method for applying preferential service on edge networks. SPQ, in presence of persistent high priority traffic, is known to behave in a very hostile manner toward low priority flows, causing them to experience poor TCP performance. This often leads to substantial packet losses, which consequently results in aggressive reduction in the congestion...
Needs of content mass distribution in wireless networks are rapidly increasing. Due to wireless capacity limitation, CCN is considered as a promising future Internet technology because of its natural multicast enabled architecture. To overcome multicast limitations, MNC based multicast schemes are also considered as optimal approaches. We propose an enhanced system architecture combining CCN and MNC...
This paper presents a technique to extend the transmission range over a single RS-485 cable, without requiring installation of expensive and cumbersome RS-485 repeaters, to virtually unlimited distances, while simultaneously improving transmission speeds between closer nodes. This was accomplished by leveraging the routing capabilities embedded into each node that implements the recently released...
Many embedded wireless systems can benefit from causal and totally ordered communication (CATOC) in order to achieve reliability and logical consistency at the application level. In this paper, we present a sequencer-based CATOC protocol designed to exploit the physical broadcast capability of wireless interfaces. Under ideal conditions, the propagation and delivery of an application message to the...
Autonomous platoon control is a promising auto drive technology. It frees drivers from stressful driving task and offers comfortable car trip experience. It is also expected to contribute to energy savings. In platooning control systems, beacon messages have an important role. Each member vehicle controls its acceleration according to the information of the position, speed, and acceleration included...
Wireless sensor-actuator networks are gaining ground as the communication infrastructure for process monitoring and control. Industrial applications demand a high degree of reliability and real-time guarantees in communication. Because wireless communication is susceptible to transmission failures in industrial environments, industrial wireless standards such as WirelessHART adopt reliable graph routing...
In vehicular communications, the current standards can be applied for safety-related message exchange but in the future world, other new applications like autonomous controlled vehicles require more reliability and capacity with small delay. Moreover, the harsh communication environment is one of the most difficult challenges. The line-of-sight (LOS) component of the signal in inter-vehicle connectivity...
Raptor code, as one of the most popular forward error correction codes, has been widely used for reliable transmission over wireless channels. However, there's no standard and effective error checking mechanism in Raptor. In this paper, we fill CRC value in each encoded packet and propose an improved CRC coding approach for Raptor. In our algorithm, we lower the CRC computational complexity by generating...
Opportunistic spectrum access in wideband regime requires higher processing capabilities of digital radio front ends. An emerging signal processing approach termed compressive sensing enables estimation of the sparse wideband exploiting very few compressive measurements, thus employs relief of high-speed signal processing units. This letter proposes a novel scheme of wideband sensing for cognitive...
Power consumption and lifetime are essential features of sensor networks. On the one hand, the power consumption should be as low as possible to enable an energy-aware system. On the other hand, the lifetime should be as long as possible to ensure a comprehensive coverage. Especially, for surveilling security zones, e.g., the frontier between two countries or the terrain of military base stations,...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.